Season
Episodes
Episode 1
On his birthday, So Mun's struck by a strange burst of light that leaves puzzling changes to his body. He finds answers inside the local noodle shop.
Episode 2
The Counters give Mun an extraordinary surprise. While contemplating whether he wants to join them, he's given a taste of the action.
Episode 3
Lim Ju-yeon and Kim Ung-min notice something is different about Mun. Ga Mo-tak heads to the police station for answers about his forgotten past.
Episode 4
In a confrontation with violent bullies, Mun loses control over his rage — and must face the consequences. Mo-tak is reunited with his old cellphone.
Episode 5
Do Ha-na saves Mun from the attacks of a powerful demon with a malicious tongue. Kim Jeong-yeong helps Mo-tak look into his last detective case.
Episode 6
While the Counters attempt to keep the truth behind his painful past from Mun, he discovers a mysterious memory card among his parents' belongings.
Episode 7
During a trip into his most traumatic memory, Mun has his first encounter with Ji Cheong-sin. Later, he leads the Counters to a car junkyard.
Episode 8
Things get personal for Ha-na as she takes down a familiar demon. The team tries to locate a reservoir tied to a case Mun's father had worked.
Episode 9
Cheong-sin leaves Mun in a bad state, but Chu Mae-ok is determined to save his life. The Counters set out to make the mayor's corruption public.
Episode 10
Wi-gen calls for an action that could take everything away from Mun. When stunning news about Cheong-sin is reported, the Counters can't believe it.
Episode 11
The Counters struggle in a mismatched fight against an increasingly dangerous Cheong-sin and the other demons. Mo-tak's memories resurface.
Episode 12
A heartbroken Mo-tak and the team plot revenge against Shin Myeong-hwi and his collaborators. While carrying out their scheme, a human corpse turns up.
Episode 13
As Cheong-sin becomes nearly unstoppable, the Counters learn there may be a way to defeat him for good. Mo-tak gets justice for Jeong-yeong.
Episode 14
Myeong-hwi's son notices something about his father isn't quite right. When Baek Hyang-hui kidnaps a young girl, the Counters rush after her.
Episode 15
The team welcomes back a Counter who's been overseas. After confirming his suspicions about his father, Shin Hyeok-u goes to Mun.
Episode 16
The final face-off against Myeong-hwi tests Mun and the other Counters' limits. In Yung, long-awaited reunions take place.
Cast
Cho Byeong-kyu
So Mun
Yu Jun-sang
Ga Mo-tak
Ahn Suk-hwan
Choi Jang-mul
Kim Se-jeong
Do Ha-na
Yeom Hye-ran
Chu Mae-ok
Yoo In-soo
Na Jeok-bong
Jin Sun-kyu
Ma Ju-seok
Kang Ki-young
Hwang Pil-gwang
Kim Hieora
Gelly Choi
Kim Hyun Wook
Wong Liqiang
Moon Sook
Wigen
Kim So-ra
Kim Gi-ran